Abstract
The activity, the heat of mixing, the concentration fluctuation in the long wavelength limit (Scc(0)) and the chemical short range order parameter (CSRO) have been studied as a function of composition in LiMg molten alloys by using first order quasi-chemical (QC) theory. The interchange energy has been considered a function of temperature and thus various thermodynamic quantities are calculated at elevated temperatures. The study reveals that though LiMg is considered a simple regular alloy, its various thermodynamic properties deviate from the ideal solution behaviour. Scc(0) computed at different temperatures from QC-theory are found to be smaller than the ideal values and heterocoordination in the nearest neighbour shell is found to exist through the entire concentration range. On the other hand, Scc(0) computed directly from the measured activity data indicates that the LiMg liquid alloy behaves as a segregating system for smaller content of Li (CLi≤0.3). The building of heterocoordination starts around CLi≥0.3 and remains for the rest of the compositions.
| Original language | English |
|---|---|
| Pages (from-to) | 358-364 |
| Number of pages | 7 |
| Journal | Physica B+C |
| Volume | 145 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1987 |
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Thermodynamic properties of molten LiMg alloy. / Singh, R. N.; Pandey, D. K.; Sinha, S.; Mitra, N. R.; Srivastava, P. L.
In: Physica B+C, Vol. 145, No. 3, 1987, p. 358-364.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermodynamic properties of molten LiMg alloy
AU - Singh, R. N.
AU - Pandey, D. K.
AU - Sinha, S.
AU - Mitra, N. R.
AU - Srivastava, P. L.
PY - 1987
Y1 - 1987
N2 - The activity, the heat of mixing, the concentration fluctuation in the long wavelength limit (Scc(0)) and the chemical short range order parameter (CSRO) have been studied as a function of composition in LiMg molten alloys by using first order quasi-chemical (QC) theory. The interchange energy has been considered a function of temperature and thus various thermodynamic quantities are calculated at elevated temperatures. The study reveals that though LiMg is considered a simple regular alloy, its various thermodynamic properties deviate from the ideal solution behaviour. Scc(0) computed at different temperatures from QC-theory are found to be smaller than the ideal values and heterocoordination in the nearest neighbour shell is found to exist through the entire concentration range. On the other hand, Scc(0) computed directly from the measured activity data indicates that the LiMg liquid alloy behaves as a segregating system for smaller content of Li (CLi≤0.3). The building of heterocoordination starts around CLi≥0.3 and remains for the rest of the compositions.
AB - The activity, the heat of mixing, the concentration fluctuation in the long wavelength limit (Scc(0)) and the chemical short range order parameter (CSRO) have been studied as a function of composition in LiMg molten alloys by using first order quasi-chemical (QC) theory. The interchange energy has been considered a function of temperature and thus various thermodynamic quantities are calculated at elevated temperatures. The study reveals that though LiMg is considered a simple regular alloy, its various thermodynamic properties deviate from the ideal solution behaviour. Scc(0) computed at different temperatures from QC-theory are found to be smaller than the ideal values and heterocoordination in the nearest neighbour shell is found to exist through the entire concentration range. On the other hand, Scc(0) computed directly from the measured activity data indicates that the LiMg liquid alloy behaves as a segregating system for smaller content of Li (CLi≤0.3). The building of heterocoordination starts around CLi≥0.3 and remains for the rest of the compositions.
UR - http://www.scopus.com/inward/record.url?scp=0023392285&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023392285&partnerID=8YFLogxK
U2 - 10.1016/0378-4363(87)90105-7
DO - 10.1016/0378-4363(87)90105-7
M3 - Article
AN - SCOPUS:0023392285
VL - 145
SP - 358
EP - 364
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
SN - 0378-4363
IS - 3
ER -